Dear Jean-Francois, I use "Lenovo WebCam Center" and "Dorgem" to do the webcam preview function, there are the following resolution settings 160x120 176x144 320x240 352x288 640x480 Do you need all the resolutions logs? I try to use "Device Monitoring Studio" to log the USB traffic this time. You can download the QVGA and VGA USB snoop log and the .INF file from here. http://people.canonical.com/~acelan//bugs/lp310760/ Dear Mauro, Sure, I'll give you the patches against the V4L/DVB hg tree. But I think I should come out a conclusion with Jean-Francois, right? Best regards, AceLan Kao. 2009/7/17 Jean-Francois Moine <moinejf@xxxxxxx>: > On Fri, 17 Jul 2009 04:32:25 -0300 > Mauro Carvalho Chehab <mchehab@xxxxxxxxxx> wrote: > >> Em Fri, 17 Jul 2009 11:30:24 +0800 >> AceLan Kao <acelan.kao@xxxxxxxxxxxxx> escreveu: > [snip] >> > Thanks for your advice and links, I have found out the correct i2c >> > commands to turn on/off the LED flash for Lenovo >> > webcam(SENSOR_MI1310_SOC). Also, I fixed the upstream kernel, so >> > that the camera preview and capture function are working now. >> > The problem came from these two patches >> > 6af4e7a V4L/DVB (10424): gspca - vc032x: Add resolution 1280x1024 >> > for sensor mi1310_soc. >> > a92e906 V4L/DVB (10420): gspca - vc032x: Webcam 041e:405b added and >> > mi1310_soc updated. >> > I just disable the 1280x1024 resolution and revert back to the >> > origin mi1310_soc VGA and QVGA settings. > [snip] >> Also, since Jean-Francois added 1280x1024 resolution and changed the >> initialization tables, I suspect that this worked fine with some >> webcam model. >> >> So, probably, the bug is specific to this cam model (or related to a >> poor USB performance at Lenovo internal usb bus). So, it is important >> to know what is broken and what is not at the i2c sequence of >> commands, in order to not break other similar devices. > > Hi AceLan Kao, > > Sorry to be a bit late on the problem, I'm busy with too many other > webcams! > > First about the LEDs. 0x89 as the request value in USB control messages > seems to control to GPIO. It may turn on/off the LEDs and also does > sensor selection for the Samsung Q1. It should be specific to the > webcam. > > Then, about the mi1310_soc. The zs328.inf and the C0130Dev.inf > extracted from the ms-win driver and the usb snoop I have contain almost > identical sequences, the ones which are in the driver since the > addition of the webcam 041e:405b. Three guys use this webcam. Indeed, > they have problems (mainly image freeze with frame overflow messages in > the kernel traces). > > For now, I may ask the 041e:405b owners to check if your patch works. > > Otherwise, I thought to add the YUYV mode to the mi1310_soc, as it is > for the mi1320_soc (the usb snoop I have is in this mode). > > Also, as you have the webcam and surely the ms-win driver, may you send > me usb snoops in all resolutions and the .INF? > > Thanks. > > -- > Ken ar c'hentañ | ** Breizh ha Linux atav! ** > Jef | http://moinejf.free.fr/ > -- Chia-Lin Kao(AceLan) http://blog.acelan.idv.tw/ E-Mail: acelan.kaoATcanonical.com (s/AT/@/) -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
